Disk-plow attachment.



F. LAIRD.

DISK PLOW ATTACHMENT. j

m'rucnnofircm JULY 20. 1918.

]| ,286,,35% Patented Dec. 3, 1918.

. rnnnnniox mini), or onavroon, OKLAHOMA.

res ate.) f

useful Improvements in Disk-Plow Attachmerits, of which the followingis a specification, reference being had; to the accompanying drawings. This invention relates to certain improve ments in disk plows attachmentsand itis an object of the invention to provide a, novel and improved device of this general character which can be readily and conveniently applied to the standard or. sheth of a shovel cultivator. It is also an objectof the inventionto pro vide a novel and improved attachment of this general character wherein the disk comprised therein may be readily and conveniently adjusted as the occasions of prac tice may require together with means to maintain the disk in its required position.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved disk plow attachment, whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth. l The novel features of my invention hereinafter be definitely claimed. a

In order that my invention may be the better understood I will now proceed to describe the same with reference to the accompanying drawings, wherein:

Figure 1 is a View partly in front elevaa tion and partly in section illustrating a disk plow attachment constructed in accordance with an embodiment of my inventionand in applied position, the coacting portion ofa cultivator standard or sheth being shown in fragment.

Fig. 2 is a view in side: elevation of myimproved attachment as herein disclosed, and

Fig. 3 is a view in top plan of the plate comprised in my attachment as herein embodied. a i

As disclosed in the accompanying drawings P denotes a plate preferably ofmetal and which is substantially rectangular in form and provided along one longitudinal will edge with a slot 1 through which the bolts p f n sK -rLow arracii unnr.

W specific a tion of Lettersii ii'atent. a n ueauoafiiea July 20,1918. SerialNo. 245,901.

raameanee. 191 1 5 2 or are adapted to bedirected clamping the plate to the standard or sheth of a shovel cultivatoriafter the shovel or plow has been removed. q; l The opposite longitudinal. portion of the barrel or sleeve 3. Open, atiits opposite ends and througlrwhichis directedtheshaft 4c.

The shaftg t is of alengthto extend through the barrel orvsleeve 3fbjeyond the opposite ends thereof. Embracing or surrounding therupper end of the shaft lisa sleeve 5. carried by an end portion of an arm or lever 6. a The sleeve Sis held to the upper end portionof the shaft t through themediumof the clamping screw 7 threaded through said shaft 4. By thismeansthe arm or lever 6 may be readily removed when the occasions of practice may so require. The upper end portion of the plate P is provided with a laterally directed web 8 having its marginal plate P v has integrally formed; therewith a sleeve and having binding contact with the portion providedwith the depending teeth orrack 9 with which coactsthe pivoted latch i 10 carried by the outer end portion of the arm or lever 6. The working end of the latch 10 is constantly urged toward the teeth or rack 9 to effect the desired locking engagement therewith through the medium of the expansible member 11 herein disclosed as a conventional coil spring interposed between the arm or lever 6 and the tail portion 10* of the latch 10.

. The lower end portion ofthe shaft 4: is provided with the laterally directed and substantially perpendicularly related extension or spindle 12 whichserves as amounting for the disk plow D. a

H denotes a tubular hub closed at its outer end and which is adapted to be loosely mounted upon the spindle l2 and said hub substantially midway its length is provided with an outstandingannular flange 14 to which the disk plow D is detachably secured through the medium of the removable bolts 15. y y

Theinner or. open end portion of the hub H is also provided with an outstanding annular flangelfi and engageable therewith is a the sand cap 17 carried by the inner end servesto hold the hub H in applied osition to bereadily removed when the upon the spindle 12 yet permits sai hub H portion of the spindle 12. r The sand cap 17 The plate P provides means whereby my improved attachment may be readily and conveniently applied to the standard or shaft of a shovel cultivator or the like and the arm or lever 6 permits the disk D to be adjusted into the position desired while the latch 10 coacts with the teeth or rack 9 for holding-the disk in its required position. It will therefore be self evident that my improved attachment can be employed to conveniently convert a shovel cultivator into a rotary disk cultivator.

From the foregoing description, it I is thought to be obvious that a disk plow attachment constructed in accordance with my invention is particularly well adapted for.

use by reason of the convenience and facility with which it may be assembled and operated and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim: A disk plow attachment comprising an elongated plate provided with a longitudif nally disposed slot whereby the plate may beadjustably secured to a support, a longitudinal margin of said plate being provided with a barrel, a shaft disposed through the barrel and provided at one end portion with a spindle, a lever engaged with the opposite end portion of the shaft, a laterally directed web carried by the end portion of the plate adjacent the lever, said web being provided with downwardly directed teeth, and a latch J. M. HENDERSON, F. O. LAIRD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

